case study

CITYROW

CITYROW asked Runtime Revolution to help them build their platform—website, mobile app, and embedded tablet—to deliver the best-connected water rowing experience.
5 min read
June 17, 2025
Company
CITYROW
Industry
Fitness
Timeline
2018 - Present
Location
New York City, NY
Team
Started with a team of 3 developers and grew to 9 developers + 1 QA
CITYROW is a connected fitness company focused on offering the best on-demand rowing and HIIT classes to its customers.
574,710,253
total meters rowed since 2018 (around 154 times the length of the Mississippi river)
6
Average workouts per month per user
275,000
meters rowed by users on average over the course of their membership lifetime

Team Behind the Build

André Nunes
Developer
João Rosa
Team Leader
João Veríssimo
Developer

Technologies

Challenges

Develop an embedded app for the tablet in the company’s flagship product.

Allow customers using earlier rower products to monitor their training using their own Android / iOS devices, connecting via Bluetooth and registering the distances they row in real-time.

Build an engaging website that promotes CITYROW’s vision and a shop for its products.

Solution

We started with a very simple website where you could buy a monthly subscription to use the mobile app. It evolved from there as the project matured; there was a rebrand of the website, and it now allowed you to directly buy rowers, mobile docks for rowers, accessories, and brand apparel. The shop was built from scratch to allow multiple currencies: US dollars, British pounds, Euros, and Australian dollars.

The mobile app was also very simple at first; the user could see a listof videos of rowing classes and follow along with the classes at home with his water rower. They then manually entered the time and distance rowed. We then started to work on the connection between the app and the water rower with the help of a small Bluetooth comm module that you could add to most rowers. It allowed us to read the data from the rower in the app. More recent water rowers already have a built-in Bluetooth connection. In 2019, we started working on the app’s Android version and adding new features to the mobile app to take advantage of the rower connection. One new feature shows distance and pace in real-time.

CITYROW now offers a rower with an incorporated tablet. For this, we had to redesign the app so it would better adapt to this new screen size. There was also the need to develop a system that updates this new app “over-the-air” for every rower installed with it.

Client’s feedback

We enjoy working with Runtime because of their commitment to quality and excellent communication. We couldn’t imagine a better partner to help us on our mission of being the best digital rowing experience around.
Anthony Guidarelli
CPO/CTO, CityRow

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